A laser-based white light illuminant comprises a III-nitride quantum dot laser diode and phosphors that convert the emitted laser light into white light. The laser light is emitted from an active region comprised of small quantum dots having a narrow size distribution, thereby providing narrower linewidths, decreased operating current density and increased peak efficiency. The white light illuminant has a number of advantages of LED-based solid state lighting, including higher power conversion efficiency, higher achievable luminous efficacy, and new and improved functionality.
STATEMENT OF GOVERNMENT INTEREST
 This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U.S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.